I had the same problem (my logs were identical), I spent almost 15 days without being able to get this problem through the CS50 check, it turns out that in the end the check looks for the convert() function to do the tests so I changed the name of my original function from "formart_verifier" to "convert" and only used that function in my test file (not one of the ones I created) and that did the trick. It only took me 2 weeks to figure it out.